For GRH01
Optional accessory
Attach the chuck adapter to a keyless drill chuck to
which 1/2"-20 size screw can be installed, and then
install them to the tool. When installing it, refer to the
section "Installing or removing drill bit".
1
2
► 1. Keyless drill chuck 2. Chuck adapter
For GRH02
Use the quick change drill chuck as standard equip-
ment. When installing it, refer to "changing the quick
change chuck for SDS-plus".
Hold the ring and turn the sleeve counterclockwise to
open the chuck jaws. Place the bit in the chuck as far as
it will go. Hold the ring firmly and turn the sleeve clock-
wise to tighten the chuck.
► 1. Sleeve 2. Ring
To remove the bit, hold the ring and turn the sleeve
counterclockwise.
Diamond core drilling
NOTICE:
If performing diamond core drilling
operations using "rotation with hammering"
action, the diamond core bit may be damaged.
When performing diamond core drilling opera-
tions, always set the action mode changing knob to
the
position to use "rotation only" action.
Beating dust on the filter
Optional accessory
CAUTION:
case while the dust case is removed from the
dust collection system. Doing so may cause dust
inhalation.
CAUTION:
turning the dial on the dust case. Turning the dial
while the tool is running may result in the loss of
control of the tool.
By beating the dust on the filter inside the dust case,
you can keep the vacuum efficiency and also reduce
the number of times to dispose of the dust.
Turn the dial on the dust case three times after col-
lecting every 50,000 mm
vacuum performance declined.
NOTE: 50,000 mm
holes of ø10 mm and 65 mm depth (14 holes of ø3/8"
and 2" depth).
1
► 1. Dust case 2. Dial
Disposing of dust
Optional accessory
CAUTION:
2
switched off and the battery cartridge is removed
before carrying out any work on the tool.
CAUTION:
disposing of dust.
CAUTION:
before the dust case becomes full. Failure to do so
may decrease the dust collection performance and
cause dust inhalation.
CAUTION:
decreases if the filter in the dust case become
clogged. Replace the filter with new one after
approximately 200 times of dust fulfillment as a
guide. Failure to do so may cause dust inhalation.
16 ENGLISH
Do not turn the dial on the dust
Always switch off the tool when
3
of dust or when you feel the
3
of dust equivalents to drilling 10
1
2
Always be sure that the tool is
Be sure to wear dust mask when
Empty the dust case regularly
The performance of dust collection